Preheat the oven to 425°F and spray muffin tins with non-stick spray.
Peel onion, cut in quarters and puree fine in food processor.
Measure puree and increase or decrease the amount to make 1 cup.
Beat together butter, eggs and sugar and add pureed onions.
Stir in remaining ingredients in the order given and mix batter thoroughly.
Fill muffin tins almost full.
Bake muffins 20 minutes or until they are puffed and well browned.
Recipe Courtesy of Chef Waldy Malouf of Beacon Restaurant, New York City, on behalf of the Walnut Marketing Board